<template>
	<div>
<el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
</el-breadcrumb>

<el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col :span="3">
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
		
	   <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
        	<template slot-scope="scope">
      			<el-row
      			v-for="(item1,i1) in scope.row.children" 
      			:key='item1.id' 
      			:class="['bdbottom',i1 === 0 ? 'bdtop' : '', 'vcenter']">
      				<el-col :span='5'>
      					<el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
      					 <i class="el-icon-caret-right"></i>
      				</el-col>
      			<el-col span='19'>
              			<el-row
                 :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children" 
                  :key="item2.id">
                  		<el-col span='6'>
      					<el-tag
						type='success'
      					closable @close="removeRightById(scope.row, item2.id)"
      					>
      					{{item2.authName}}</el-tag>
      					 <i class="el-icon-caret-right"></i>
      					</el-col>
      					<el-col span='18'>
      					<el-tag 
      					type="warning"
      					 v-for="item3 in item2.children"
      					  :key="item3.id" closable @close="removeRightById(scope.row, item3.id)">{{item3.authName}}</el-tag>
      					</el-col>
      					</el-row>
      				</el-col>
      			</el-row>
        	</template>
        </el-table-column>
		<el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
</el-card>
      <!-- 树形控件 -->
       <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
      <el-tree 
      :data="rightslist" 
      :props="treeProps"
       show-checkbox 
       node-key="id" 
       default-expand-all 
       :default-checked-keys="defKeys" 
       ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
	</div>
</template>

<script>
	export default {
		data () {
			return {
				 rolelist: [],
				 setRightDialogVisible: false,
				 rightslist: [],
				 treeProps: {
				 	label: 'authName',
				 	children: 'children'
				 },
				 defKeys: [],
				 roleId: ''
			}
		},
		created () {
			 this.getRolesList()
		},
		methods: {
			async getRolesList() {
				const { data: res } = await this.$http.get('roles')
		      if (res.meta.status !== 200) {
		        return this.$message.error('获取角色列表失败！')
		      }
		      this.rolelist = res.data
			},
			async removeRightById (role, rightId) {
				const confirmResult = await this.$confirm(
		        '此操作将永久删除该文件, 是否继续?',
		        '提示',
		        {
		          confirmButtonText: '确定',
		          cancelButtonText: '取消',
		          type: 'warning'
		        }
		      ).catch(err => err)
		      if (confirmResult !== 'confirm') {
		        return this.$message.info('取消了删除！')
		      }
		    const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
			if (res.meta.status !== 200) {
				return this.$message.error('删除权限失败！')
			}
			role.children = res.data
			},
			async showSetRightDialog (role) {
				this.roleId = role.id
				const { data: res } = await this.$http.get('rights/tree')
				      if (res.meta.status !== 200) {
			        return this.$message.error('获取权限数据失败！')
			      }
			      this.rightslist = res.data

			      this.getLeafKeys(role, this.defKeys)

			      this.setRightDialogVisible = true
			},
			getLeafKeys (node, arr) {
				if (!node.children) {
					return arr.push(node.id)
				}

				node.children.forEach(item => this.getLeafKeys(item, arr))
			},
			setRightDialogClosed () {
				this.defKeys = []
			},
			async allotRights () {
		      const keys = [
		        ...this.$refs.treeRef.getCheckedKeys(),
		        ...this.$refs.treeRef.getHalfCheckedKeys()
		      ]
		      const idStr = keys.join(',')

		      const { data: res } = await this.$http.post(
		        `roles/${this.roleId}/rights`,
		        { rids: idStr }
		      )
			if (res.meta.status !== 200) {
		        return this.$message.error('分配权限失败！')
		      }

		      this.$message.success('分配权限成功！')
		      this.getRolesList()
		      this.setRightDialogVisible = false
			}

		}
	}
</script>

<style lang='less' scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
